Day in the Life of an Electrician, Fixing a Smoke and Carbon Monoxide Detector, Thoughts?

My name is Hendy. I'm a 25-year-old electrician on an emergency service call at a resident's home. Let's get right to it. So, a lady called saying she had a beeping smoke and carbon monoxide detector and that she needed urgent service because the baby can't sleep at night and her husband can't do it. So, I told her, "No problem, miss. I'll be right over the next hour. No need to worry." I go to Home Depot and I pick up the new detector and get straight to business. I make sure I use my non-cont voltage tester to make sure the circuit is off. This was a 120 volt hardwired smoke detector with one black hot wire, one white neutral wire, and one red traveler wire. I wired out my connections to the new jumper cable and mount the ceiling plate. I make sure to have my impact drill so I can screw the back plate to the metal box. Didn't want to use a screwdriver so I can save my wrist. Don't want to get carpal tunnel. I connect the new detector. Job finished. I turn back on the circuit breaker. I saw the green light. No more beeps. The lady was happy. I was in and out about 30 minutes. I pack my stuff up. I go to my work van. I put all my tools away. The lady paid $500 cash, so I get hype and I do the money spread. That's one of the perks of being a bluecollar. Once a job is done, you get paid the same day. On to the next call. P.